Multi-port power conversion device with waterproof function

Abstract

The utility model relates to a multiport power conversion device with a waterproof function, which comprises a top cover, a bottom cover, a casing, a control structure and a connecting port, the top cover is connected to the top of the casing, the bottom cover is connected to the bottom of the casing, the control structure is arranged in the casing, the connecting port is arranged on the outer side of the casing and communicated with the inside of the casing, and the connecting port is connected with the casing. The control structure is connected with external equipment through the connecting port, the bottom cover is provided with a fixing screw, the fixing screw penetrates through the interior of the shell to be connected to the top cover, a screw head of the fixing screw is concavely provided with a first sealing groove, the fixing screw is provided with a first sealing washer, and the first sealing washer is filled in the first sealing groove after being extruded during locking. And the shell is provided with an observation window for observing the interior of the device. Through unique structural design and sealing measures, good waterproof performance is achieved, the reliability of the device in a humid or water environment is improved, and the service life of the device in the humid or water environment is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of power electronics technology, and in particular to a multi-port power conversion device with waterproof function. Background Technology

[0002] In military outdoor power supply applications, dustproof and waterproof features are generally required. The power supply must continue to operate normally and provide power to equipment even when exposed to rain or immersion outdoors. Existing waterproof power supplies require internal potting to achieve dustproof and waterproof performance, significantly increasing their weight and reducing their convenience for outdoor use. Another approach is to use an integrated sealing ring for waterproofing, with a screw-sealing groove at the screw mounting hole. A sealing washer is placed within this groove, and tightening the screw causes the washer to deform and fill the groove, achieving a seal. This waterproofing method is complex, requiring the sealing washer to be placed in the groove first, followed by a nylon washer, and then the screw to be tightened. Because the nylon washer and screw are rigidly connected, gaps remain between the screw and washer after tightening. During prolonged immersion, water can seep into the housing through these gaps along the screw threads, making this method unsuitable for high-protection products. Furthermore, if disassembling and assembling the machine requires first removing the protective film (which serves as a waterproofing layer) from the chassis before removing the screws on the top cover, the removed protective film cannot be reused, resulting in waste and making assembly difficult. Summary of the Invention

[0003] This invention provides a multi-port power conversion device with waterproof function, aiming to solve the problem that existing power devices have poor waterproof performance and are prone to failure.

[0004] This utility model provides a waterproof multi-port power conversion device, including a top cover, a bottom cover, a housing, a control structure, and a connection port. The top cover is connected to the top of the housing, the bottom cover is connected to the bottom of the housing, the control structure is disposed inside the housing, and the connection port is disposed on the outside of the housing and communicates with the inside of the housing. The control structure is connected to an external device through the connection port. The bottom cover is provided with a fixing screw, which passes through the inside of the housing and is connected to the top cover. The screw head of the fixing screw is recessed with a first sealing groove, and the fixing screw is provided with a first sealing washer. When tightened, the first sealing washer is squeezed and fills the first sealing groove. The housing is provided with an observation window for observing the inside of the device.

[0005] As a further improvement of this utility model, the top edge of the housing is provided with a second sealing groove, and a second sealing gasket is provided in the second sealing groove. The bottom edge of the top cover is provided with a first protrusion, and the first protrusion is connected in the second sealing groove. After the second sealing gasket is squeezed, it contacts the second sealing groove and the first protrusion.

[0006] As a further improvement of this utility model, the bottom edge of the housing is provided with a third sealing groove, the third sealing groove is provided with a third sealing gasket, the top edge of the bottom cover is provided with a second protrusion, the second protrusion is connected in the third sealing groove, and the third sealing gasket contacts the third sealing groove and the second protrusion after being squeezed.

[0007] As a further improvement of this utility model, the control structure includes a control board and a power board. The control board is disposed on the side wall lug of the housing, and the power board is disposed on the bottom cover. The control board is connected to the power board.

[0008] As a further improvement of this utility model, a display window is provided in the middle of the top cover, the display screen is connected to the bottom of the top cover and placed at the display window, and a membrane button is attached to the top of the top cover. Both the display screen and the membrane button are connected to the control board.

[0009] As a further improvement of this utility model, the control structure also includes a filter board, which is disposed inside the housing and close to the connection port. The filter board is connected to an external device through the connection port, and the pins on the power board are connected to the filter board.

[0010] As a further improvement of this utility model, the connection port is provided with a waterproof cover.

[0011] As a further improvement of this utility model, a heat-conducting pad is provided between the power board and the bottom cover.

[0012] The beneficial effects of this utility model are: through unique structural design and sealing measures, it achieves good waterproof performance, improves the reliability and service life of the device in humid or watery environments, and at the same time, it has a compact structure, good heat dissipation effect, and is easy to operate and maintain, and has broad application prospects. Attached Figure Description

[0013] Figure 1 This is an exploded view of the device of this utility model;

[0014] Figure 2 This is a cross-sectional view of the device of this utility model;

[0015] Figure 3 This is a schematic diagram of the fixing screw of this utility model;

[0016] Figure 4 This is a cross-sectional view of the fixing screws of this utility model after assembly;

[0017] Figure 5 This is an overall drawing of the formed device of this utility model.

[0018] Reference numerals: 1-Housing, 2-Top cover, 3-Bottom cover, 4-Display window, 5-Display screen, 6-Membrane keypad, 7-First protrusion, 8-Control board, 9-Second sealing groove, 10-Second sealing gasket, 11-Connection port, 12-Third sealing gasket, 13-Power board, 14-Second protrusion, 15-Fixing screw, 16-First sealing gasket, 17-Observation window, 18-Waterproof cover, 19-Filter board, 20-First sealing groove. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this utility model clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0020] like Figure 1-5 As shown, this utility model provides a waterproof multi-port power conversion device, including a top cover 2, a bottom cover 3, a housing 1, a control structure, and a connection port 11. The top cover 2 is connected to the top of the housing 1, the bottom cover 3 is connected to the bottom of the housing 1, the control structure is disposed inside the housing 1, and the connection port 11 is disposed on the outside of the housing 1 and communicates with the inside of the housing 1. The control structure is connected to an external device through the connection port 11. The bottom cover 3 is provided with a fixing screw 15, which passes through the inside of the housing 1 and is connected to the top cover 2. The screw head of the fixing screw 15 is recessed with a first sealing groove 20, and the fixing screw 15 is provided with a first sealing washer 16. When tightened, the first sealing washer 16 is squeezed and fills the first sealing groove 20. The housing 1 is provided with an observation window 17 for observing the inside of the device.

[0021] As an embodiment of the present invention, the top edge of the housing 1 is provided with a second sealing groove 9, and a second sealing gasket 10 is provided in the second sealing groove 9. The bottom edge of the top cover 2 is provided with a first protrusion 7, which is connected in the second sealing groove 9. After the second sealing gasket 10 is squeezed, it contacts the second sealing groove 9 and the first protrusion 7.

[0022] In another embodiment of the present invention, the bottom edge of the housing 1 is provided with a third sealing groove, and a third sealing gasket 12 is provided in the third sealing groove. The top edge of the bottom cover 3 is provided with a second protrusion 14, which is connected in the third sealing groove. After the third sealing gasket 12 is squeezed, it contacts the third sealing groove and the second protrusion 14.

[0023] In another embodiment of the present invention, the control structure includes a control board 8 and a power board 13. The control board 8 is disposed on the side wall lug of the housing 1, and the power board 13 is disposed on the bottom cover 3. The control board 8 is connected to the power board 13.

[0024] In another embodiment of this utility model, a display window 4 is provided in the middle of the top cover 2, a display screen 5 is connected to the bottom of the top cover 2 and placed at the display window 4, a membrane button 6 is attached to the top of the top cover 2, and both the display screen 5 and the membrane button 6 are connected to the control board 8.

[0025] In another embodiment of the present invention, the control structure further includes a filter board 19, which is disposed inside the housing 1 and close to the connection port 11. The filter board 19 is connected to an external device through the connection port 11, and the pins on the power board 13 are connected to the filter board 19.

[0026] In another embodiment of this utility model, the connection port 11 is provided with a waterproof cover 18.

[0027] In another embodiment of this utility model, a heat-conducting pad is provided between the power plate 13 and the bottom cover 3.

[0028] This invention provides a waterproof multi-port power converter. Multi-port power converters are increasingly widely used in modern electronic equipment and power systems. However, existing multi-port power converters often lack sufficient waterproof performance, making them prone to malfunction in humid or wet environments, affecting their normal use and reliability. The purpose of this solution is to provide a waterproof multi-port power converter to improve the reliability and service life of the device in humid or wet environments.

[0029] The top cover 2, housing 1, and bottom cover 3 are sealed together by a screw fastening sealing structure. The top cover 2 has screw mounting holes at its bottom, the housing 1 has a ring of integral sealing groove and screw through holes, and the bottom cover 3 has screw through holes. An integral sealing ring is provided within the integral sealing groove. The top cover 2, housing 1, and bottom cover 3 are fastened together by the fixing screws 15, compressing the integral sealing ring to achieve a good sealing effect. A first sealing groove 20 is provided at the screw head of the fixing screw 15. The first sealing groove 20 is an inner groove. By tightening the fixing screw 15, the first sealing washer 16 is deformed and fills the first sealing groove 20 within the fixing screw 15, thus achieving a seal. This sealing method utilizes the interaction of mechanical structures. The pressure generated by tightening the fixing screw 15 deforms the first sealing washer 16, thereby filling the first sealing groove 20 and forming a seal. The grooved screw design provides specific space for sealing, allowing the first sealing washer 16 to deform in a targeted manner and perform its sealing function.

[0030] The groove on the screw serves as a limiting feature, ensuring a good contact between the fixing screw 15 and the contact surface, while preventing damage caused by excessive deformation of the first sealing washer 16. To ensure a good contact surface, the first sealing groove 20 limits the tightening degree of the fixing screw 15, ensuring good contact under appropriate pressure and avoiding connection problems caused by excessive looseness or tightness. Preventing excessive deformation of the first sealing washer 16 extends the service life of the sealing ring, preventing damage due to excessive compression, thereby improving the reliability of the entire sealing structure. Through the above sealing method and limiting function, dustproof and waterproof performance is effectively improved. A good seal can prevent dust, moisture, and other external impurities from entering the equipment, protecting critical components and extending the equipment's service life. This sealing method is of significant practical importance, especially in applications with high dustproof and waterproof requirements, such as outdoor equipment and electronic devices.

[0031] In addition, both the top cover 2 and the bottom cover 3 are provided with an integral sealing protrusion, namely the first protrusion 7 and the second protrusion 14, which are respectively inserted into the second sealing groove 9 and the third sealing groove of the housing 1, and respectively pressed on the second sealing gasket 10 and the third sealing gasket 12, further enhancing the waterproof performance of the device.

[0032] The top cover 2 is equipped with a display screen 5 and a membrane keypad 6. The LCD display screen 5 is fixed to the top cover 2 with flathead screws, and the membrane keypad 6 is adhered to the top cover 2 with 3M waterproof adhesive, and the membrane keypad 6 is located above the display window 4. The housing 1 contains a control board 8 and a power board 13, and filter boards 19 are installed on both sides. The power board 13 is fixed to the bottom cover 3 with three-piece screws. The control board 8 is placed on the lugs on the inner side wall of the housing 1 and connected to the power board 13 via a connector. The filter boards 19 are soldered to the sides of the housing 1 near the connection port 11. Multiple connection ports 11 are provided to support multi-port communication. A thermal pad is provided between the power board 13 and the bottom cover 3 to improve heat dissipation. The bottom cover 3, with the power board 13 installed, is connected to the filter board 19 via pins on the power board 13.

[0033] The manufacturing process of this device is as follows: The top cover 2, housing 1, and bottom cover 3 are manufactured, ensuring dimensional accuracy and surface quality. An integral second sealing groove 9, a third sealing groove, and screw through holes are machined on the housing 1. Screw mounting holes and screw through holes are machined on the top cover 2 and bottom cover 3, respectively. The first protrusion 7 and the second protrusion 14 are also machined. The second sealing washer 10 is installed in the second sealing groove 9 of the housing 1, and the third sealing washer 12 is installed in the third sealing groove of the housing 1. The first protrusion 7 is inserted into the second sealing groove 9 and the second sealing washer 10 is compressed. The second protrusion 14 is inserted into the third sealing groove and the third sealing washer 12 is compressed. Then, the top cover 2, bottom cover 3, and housing 1 are fastened together using the fixing screws 15 and the first sealing washer 16, compressing the integral sealing ring to achieve a seal. Secure the LCD display screen 5 to the top cover 2 using flathead screws, ensuring a firm installation. Adhere the membrane button 6 to the top cover 2 using 3M waterproof adhesive, positioning it above the display window 4. Place the control board 8 on the side wall lugs inside the housing 1 and connect it to the power board 13 via a connector. The power board 13 is fixed to the bottom cover 3 with screws. Solder the filter board 19 to the connection port 11. Place a thermal pad between the power board 13 and the bottom cover 3 to improve heat dissipation.

[0034] When not in use, the waterproof cover 18 is inserted into the connection port 11 to seal the interface and prevent dust and water from flowing into the device. At the same time, a transparent observation window 17 is provided on the housing 1 so that the internal condition of the device can be seen from the outside.

[0035] This device reduces production and maintenance costs and improves work efficiency through simple assembly. For large-scale production and on-site installation, simple assembly means reduced manpower and time investment, increasing production efficiency and installation speed. The device can withstand multiple disassembly and reassembly without damaging components. Modular installation allows for independent installation and disassembly of each component, facilitating maintenance and replacement. This feature of repeated disassembly and reassembly without damage to components improves the maintainability and lifespan of the equipment. When repair or upgrades are needed, components can be easily disassembled and replaced without damaging other parts.

[0036] The above description, in conjunction with specific preferred embodiments, provides a further detailed explanation of the present invention. It should not be construed that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art, various simple deductions or substitutions can be made without departing from the concept of the present invention, and all such modifications and substitutions should be considered within the protection scope of the present invention.

Claims

1. A multi-port power conversion device having a waterproof function, characterized by, The utility model provides a kind of waterproof device, including top cover, bottom cover, shell, control structure and connecting port, the top cover is connected in the top of the shell, the bottom cover is connected in the bottom of the shell, the control structure is arranged in the shell interior, the connecting port is arranged on the outside of the shell and is communicated with the inside of the shell, the control structure is connected with external device by the connecting port, the bottom cover is equipped with fixed screw, the fixed screw is connected in the top cover by the shell interior, the screw head of the fixed screw is concave and is equipped with first sealing groove, the fixed screw is equipped with first sealing washer, when locking, the first sealing washer is filled in the first sealing groove after extrusion, the shell is equipped with observation window for observing inside device.

2. The multi-port power conversion device with waterproof function according to claim 1, characterized in that, The top edge of the shell is equipped with second sealing groove, the second sealing groove is equipped with second sealing washer, the bottom edge of the top cover is convex and is equipped with first protruding piece, the first protruding piece is connected in the second sealing groove, the second sealing washer is contacted with the second sealing groove and first protruding piece after extrusion.

3. The multi-port power conversion device with waterproof function according to claim 1, characterized in that, The bottom edge of the shell is equipped with third sealing groove, the third sealing groove is equipped with third sealing washer, the top edge of the bottom cover is convex and is equipped with second protruding piece, the second protruding piece is connected in the third sealing groove, the third sealing washer is contacted with the third sealing groove and second protruding piece after extrusion.

4. The multi-port power conversion device with waterproof function according to claim 1, characterized in that, The control structure includes control board and power board, the control board is arranged on the side wall lug of the shell, the power board is arranged on the bottom cover, and the control board is connected with the power board.

5. The multi-port power conversion device with waterproof function according to claim 4, characterized in that, The middle part of the top cover is equipped with display window, display screen is connected in the bottom of the top cover and is placed at the display window, the top of the top cover is pasted with film key, and the display screen and film key are connected with the control board.

6. The multi-port power conversion device with waterproof function according to claim 4, characterized in that, The control structure further includes filter board, the filter board is arranged in the shell interior and is arranged close to the connecting port, the filter board is connected with external device through the connecting port, and the pin on the power board is connected with the filter board.

7. The multi-port power conversion device with waterproof function according to claim 1, characterized in that, The connecting port is equipped with waterproof cover.

8. The multi-port power conversion device with waterproof function according to claim 4, characterized in that, The power board is equipped with heat-conducting pad between the bottom cover.

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